[go: up one dir, main page]

WO2011065695A2 - Procédé et station de base d'émission d'informations de commande descendantes, et procédé et dispositif utilisateur pour la réception d'informations de commande descendantes - Google Patents

Procédé et station de base d'émission d'informations de commande descendantes, et procédé et dispositif utilisateur pour la réception d'informations de commande descendantes Download PDF

Info

Publication number
WO2011065695A2
WO2011065695A2 PCT/KR2010/008034 KR2010008034W WO2011065695A2 WO 2011065695 A2 WO2011065695 A2 WO 2011065695A2 KR 2010008034 W KR2010008034 W KR 2010008034W WO 2011065695 A2 WO2011065695 A2 WO 2011065695A2
Authority
WO
WIPO (PCT)
Prior art keywords
pdcch
control information
transmitted
base station
carriers
Prior art date
Application number
PCT/KR2010/008034
Other languages
English (en)
Korean (ko)
Other versions
WO2011065695A3 (fr
Inventor
이문일
한승희
정재훈
박규진
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020100112046A external-priority patent/KR101711866B1/ko
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to US13/511,623 priority Critical patent/US9178670B2/en
Publication of WO2011065695A2 publication Critical patent/WO2011065695A2/fr
Publication of WO2011065695A3 publication Critical patent/WO2011065695A3/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a radio access system supporting multiple radio frequencies.
  • the present invention relates to a method for efficiently configuring control information in a system using multiple carriers.
  • the present invention relates to a method for maximizing the characteristics of each carrier when the multi-carrier is configured to have different characteristics.
  • FIG. 1 is a conceptual diagram of a communication system using one or more radio frequencies (RF).
  • RF radio frequencies
  • a communication system supporting radio frequency (RF) may configure a communication system using a total of N RFs.
  • a base station (BS) may transmit data to one user device at the same time using one or more RFs, and the user equipment may also transmit data to the base station using one or more RFs.
  • one RF may be configured as one or a plurality of physical channels, respectively, and the base station and the user equipment may include a plurality of transmission antennas (Tx).
  • Tx transmission antennas
  • Such a system is also called a multi-carrier system.
  • FIG. 2 is a diagram illustrating the structure of a transmitter and a receiver using multiple radio frequencies.
  • a logical concept of a physical channel may be known as an uplink channel and a downlink channel.
  • the radio frequency may consist of N (RF 1, RF 2, ..., RF N)
  • the physical channels may consist of M (PHY 1, PHY 2, ..., PHY M). .
  • the signal generated through the N RFs from the transmitter may be transmitted to the receiver through the M physical channels.
  • N signals may be scheduled to be simultaneously transmitted through an RF multiplexer.
  • the signals multiplexed through the RF multiplexer at the transmitter are transmitted to the receiver through N t physical transmit antennas (Tx).
  • the signals transmitted as described above may be received through N r reception antennas Rx of a receiver supporting multi-RF reception through a wireless channel. Signals received by the N r antennas are separated into M PHY channels through a multiple RF demultiplexer. The receiver may recover signals transmitted from the transmitter through each of the separated PHY channels.
  • each physical channel of the multiple RF transmitter and receiver all techniques used in the existing single RF system may be used.
  • a plurality of RF communication modules may be configured, or signals of several physical channels may be sequentially generated and restored using one RF module.
  • multiple antenna scheme or control channel should be designed in consideration of channel characteristics for each frequency. Unlike the case where a single RF is used, when a plurality of RFs are used, the channel characteristics of each RF are different. Therefore, the system may be optimized by designing a multi-antenna technique and a control channel in consideration of the channel characteristics by frequency. . In addition, when some carriers among the plurality of carriers are configured to have the same frame structure as the existing specific system, the carriers need to be configured so that both the user equipment for the existing system and the user equipment for the new system can operate. have.
  • a multi-carrier system has a problem in that a communication system cannot be optimized because a multi-antenna technique or a control channel is not designed without considering frequency channel characteristics of physical channels.
  • an object of the present invention is to provide a method for improving the performance of a wireless access system.
  • Another object of the present invention is to provide an optimal transmission / reception method between uplink and downlink for improving performance of a communication system supporting multiple carriers.
  • Still another object of the present invention is to provide an optimized communication system by applying a multiple antenna scheme or designing a control channel in consideration of frequency channel characteristics of each carrier.
  • Another object of the present invention is to provide an optimized transmission / reception scheme for each physical channel and system parameters optimized for each physical channel.
  • Another object of the present invention is to minimize the data buffering for user data decoding, thereby reducing the complexity of the implementation of the user equipment.
  • the present invention discloses a downlink control signal transmission method for improving the performance of a wireless access system.
  • a base station may transmit the control information through a part of the plurality of carriers in transmitting user data for the user equipment and control information for the user data to a user equipment using a plurality of carriers.
  • the carrier may be configured to transmit only the user data without the control information.
  • the base station transmits the user data after a predetermined subframe than the subframe in which the control information is transmitted on the carrier to which only the user data is allocated without the control information.
  • a method for transmitting downlink control information to a user equipment using a plurality of carriers in a wireless communication system includes allocating user data for the user equipment to the plurality of carriers; And assigning control information for the user data to at least one of the plurality of carriers. And transmitting the user data and the control information to the user device.
  • the user data is transmitted after k subframes rather than a subframe in which the control information is transmitted. send.
  • a method for receiving downlink control information from a base station by a user equipment using a plurality of carriers in a wireless communication system includes receiving control information for the user equipment on at least one of the plurality of carriers; And receiving user data for the user device through the plurality of carriers using the control information, wherein the control information transmits the user data in a carrier to which only the user data is allocated among the plurality of carriers. It is received after k subframes rather than subframes.
  • a base station in which a base station transmits downlink control information to a user equipment using a plurality of carriers in a wireless communication system.
  • the base station includes a transmitter configured to transmit a radio signal with the user equipment through the plurality of carriers; And assign user data for the user equipment to the plurality of carriers, and assign control information for the user data to at least one of the plurality of carriers; And a processor coupled to the transmitter and configured to control the transmitter to transmit the user data and the control information to the user device, wherein the processor is configured to store the user data in a carrier to which only the user data is allocated among the plurality of carriers.
  • the transmitter is controlled to be transmitted after k subframes than the subframe in which the control information is transmitted.
  • a user equipment in which a user equipment using a plurality of carriers in a wireless communication system receives downlink control information from a base station.
  • the user equipment includes a receiver configured to receive a radio signal with the user equipment through the plurality of carriers; And control the receiver to be connected to the receiver and to receive control information for the user equipment on at least one of the plurality of carriers.
  • a processor configured to control the receiver to receive user data for the user equipment through the plurality of carriers using the control information, wherein the processor is configured to perform the operation on a carrier to which only the user data is allocated among the plurality of carriers.
  • the receiver is controlled to receive user data after k subframes rather than a subframe in which the control information is transmitted.
  • k is a positive integer.
  • k may be 1 or 2.
  • information indicating k may be further transmitted to the user equipment.
  • control information and k may be transmitted to the user equipment through a physical downlink control channel (PDCCH), and the user data may be transmitted to the user equipment through a physical downlink shared channel (PDSCH).
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • an optimal transmission / reception method may be applied in uplink and downlink of a communication system supporting multiple carriers.
  • an optimized communication system can be implemented by applying a multiple antenna scheme in consideration of frequency channel characteristics of each carrier.
  • the communication system reflecting the technical spirit of the present invention can be efficiently transmitted and received by achieving compatibility with the existing system.
  • the user device can decode the user data with minimum buffering.
  • the performance of a wireless communication system can be improved by transmitting a reference signal only in some subframes in a predetermined carrier among multiple carriers.
  • FIG. 1 is a conceptual diagram of a communication system using one or more radio frequencies (RF).
  • RF radio frequencies
  • FIG. 2 is a block diagram illustrating components of a user equipment and a base station for carrying out the present invention.
  • FIG. 3 is a block diagram illustrating components of a user equipment (UE) and a base station for carrying out the present invention.
  • UE user equipment
  • FIG. 4 illustrates an example of a structure of a transmitter in a user equipment and a base station.
  • 5 and 6 illustrate a physical channel and subcarriers constituting the physical channel.
  • FIG. 7 shows an example of an uplink and a downlink structure used in a communication system supporting multiple CCs.
  • FIG. 8 illustrates an example of a radio frame structure used in a wireless communication system.
  • FIG. 9 shows an example of a DL / UL slot structure in a wireless communication system.
  • FIG. 11 shows an example of a downlink subframe structure in a wireless communication system.
  • FIG. 12 illustrates an example of an uplink subframe structure in a wireless communication system.
  • FIG. 13 illustrates methods of allocating a downlink control channel in a system using multiple carriers.
  • FIG. 14 shows an example of a carrier-specific subframe structure in a multi-carrier system.
  • 15 shows an example in which a multi-PDCCH is transmitted in a multi-carrier system.
  • 16 shows an example of transmission of a multi-PDCCH in a multi-carrier system.
  • 17 shows another example of transmission of a multi-PDCCH in a multi-carrier system.
  • FIG. 19 shows an example of a CRS pattern according to an antenna port.
  • multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single carrier frequency (SC-FDMA).
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • MCD division multiple access
  • MCDMA multi-carrier frequency division multiple access
  • CDMA may be implemented in a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
  • TDMA may be implemented in wireless technologies such as Global System for Mobile Communication (GSM), General Packet Radio Service (GPRS), Enhanced Data Rates for GSM Evolution (EDGE), and the like.
  • GSM Global System for Mobile Communication
  • GPRS General Packet Radio Service
  • EDGE Enhanced Data Rates for GSM Evolution
  • OFDMA may be implemented in wireless technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE802-20, evolved-UTRA (E-UTRA), and the like.
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Wi-Fi
  • WiMAX WiMAX
  • IEEE802-20 evolved-UTRA
  • UTRA is part of Universal Mobile Telecommunication System (UMTS)
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • 3GPP LTE adopts OFDMA in downlink and SC-FDMA in uplink.
  • LTE-advanced (LTE-A) is an evolution of 3GPP LTE. For convenience of explanation, hereinafter, it will be described on the assumption that the present invention is applied to 3GPP LTE / LTE-A.
  • a user equipment may be fixed or mobile, and various devices that communicate with a base station to transmit and receive user data and / or various control information belong to the same.
  • the user equipment may be a terminal equipment, a mobile station (MS), a mobile terminal (MT), a user terminal (UT), a subscriber station (SS), a wireless device, a personal digital assistant (PDA), a wireless modem ( It may be called a wireless modem, a handheld device, or the like.
  • a base station generally refers to a fixed station that communicates with a user equipment and / or another base station, and communicates with the user equipment and other base stations for various data and control information. Replace it.
  • the base station may be called in other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point.
  • eNB evolved-NodeB
  • BTS base transceiver system
  • One RF may have one or a plurality of physical channels.
  • one RF may be referred to as a component carrier (CC).
  • CC component carrier
  • LTE UE a user equipment that can use only a single carrier, that is, one CC, is called an LTE UE, and only a stage implemented to use multiple carriers, that is, multiple CCs, is called an LTE-A UE.
  • a CC that can be used by both an LTE UE and an LTE-A UE is called a normal CC
  • a CC that can be used only by an LTE-A UE is called an LTE-A CC.
  • the data or control information is allocated to a frame / subframe / symbol / carrier / subcarrier and transmitted, so that the data or control information corresponds to a corresponding carrier / subcarrier in a corresponding frame / subframe / symbol time interval / timing. It means that it is transmitted through.
  • FIG. 3 is a block diagram illustrating components of a user equipment (UE) and a base station for carrying out the present invention.
  • UE user equipment
  • the UE operates as a transmitter in uplink and as a receiver in downlink.
  • the base station may operate as a receiver in uplink and as a transmitter in downlink.
  • the UE and the base station are antennas 500a and 500b capable of receiving information and / or data, signals, messages, and the like, transmitters 100a and 100b that control the antennas to transmit messages, and control the antennas to transmit messages.
  • the UE and the base station each include processors 400a and 400b configured to control components such as transmitters, receivers, and memory included in the UE or the base station to perform the present invention.
  • the transmitter 100a, the receiver 300a, the memory 200a, and the processor 400a in the UE may be implemented as independent components by separate chips, respectively, and two or more are one chip. It may be implemented by.
  • the transmitter 100b, the receiver 300b, the memory 200b, and the processor 400b in the base station may be implemented as independent components by separate chips, respectively, and two or more chips may be included in one chip ( chip).
  • the transmitter and the receiver may be integrated to be implemented as one transceiver in a user equipment or a base station.
  • the antennas 500a and 500b transmit a signal generated by the transmitters 100a and 100b to the outside, or receive a radio signal from the outside and transmit the signal to the receivers 300a and 300b.
  • Antennas 500a and 500b are also called antenna ports. Each antenna port may correspond to one physical antenna or may be configured by a combination of more than one physical antenna.
  • a transceiver supporting a multi-input multi-output (MIMO) function for transmitting and receiving data using a plurality of antennas may be connected to two or more antennas.
  • MIMO multi-input multi-output
  • Processors 400a and 400b typically control the overall operation of various modules in a UE or base station.
  • the processor 400a or 400b includes various control functions for performing the present invention, a medium access control (MAC) frame variable control function according to service characteristics and a propagation environment, a power saving mode function for controlling idle mode operation, and a hand. Handover, authentication and encryption functions can be performed.
  • the processors 400a and 400b may also be referred to as controllers, microcontrollers, microprocessors, microcomputers, or the like. Meanwhile, the processors 400a and 400b may be implemented by hardware or firmware, software, or a combination thereof.
  • firmware or software When implementing the present invention using hardware, application specific integrated circuits (ASICs) or digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays) may be provided in the processors 400a and 400b.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • the firmware or software may be configured to include a module, a procedure, or a function for performing the functions or operations of the present invention, and configured to perform the present invention.
  • the firmware or software may be provided in the processors 400a and 400b or may be stored in the memory 200a and 200b to be driven by the processors 400a and 400b.
  • the transmitters 100a and 100b perform a predetermined encoding and modulation on a signal and / or data to be transmitted from the processor 400a or 400b or a scheduler connected to the processor to be transmitted to the outside, and then an antenna ( 500a, 500b).
  • the transmitters 100a and 100b convert the data sequence to be transmitted into K layers through demultiplexing, channel encoding, and modulation.
  • the K layers are transmitted through the transmit antennas 500a and 500b through a transmitter in the transmitter.
  • the transmitters 100a and 100b and the receivers 300a and 300b of the UE and the base station may be configured differently according to a process of processing a transmission signal and a reception signal.
  • FIG. 4 illustrates an example of a structure of a transmitter in a user equipment and a base station.
  • the operation of the transmitters 100a and 100b will be described in more detail with reference to FIG. 3 as follows.
  • transmitters 100a and 100b in a UE or a base station may include a scrambler 301, a modulation mapper 302, a layer mapper 303, a precoder 304, a resource element mapper 305, and an OFDM / SC.
  • - May comprise an FDM signal generator 306.
  • the transmitters 100a and 100b may transmit one or more codewords. Coded bits in each codeword are scrambled by the scrambler 301 and transmitted on a physical channel. Codewords are also referred to as data streams and are equivalent to data blocks provided by the MAC layer. The data block provided by the MAC layer may also be referred to as a transport block.
  • the scrambled bits are modulated into complex-valued modulation symbols by the modulation mapper 302.
  • the modulation mapper may be arranged as a complex modulation symbol representing a position on a signal constellation by modulating the scrambled bit according to a predetermined modulation scheme.
  • m-PSK m-Phase Shift Keying
  • m-QAM m-Quadrature Amplitude Modulation
  • the complex modulation symbol is mapped to one or more transport layers by the layer mapper 303.
  • the complex modulation symbol on each layer is precoded by the precoder 304 for transmission on the antenna port.
  • the precoder 304 processes the complex modulation symbol in a MIMO scheme according to the multiple transmit antennas 500-1, ..., 500-N t to output antenna specific symbols and to apply the antenna specific symbols.
  • the resource element mapper 305 is distributed. That is, mapping of the transport layer to the antenna port is performed by the precoder 304.
  • the precoder 304 may be output to the matrix z of the layer mapper 303, an output x N t ⁇ M t precoding matrix W is multiplied with N t ⁇ M F of the.
  • the resource element mapper 305 maps / assigns the complex modulation symbols for each antenna port to appropriate resource elements.
  • the resource element mapper 305 may assign a complex modulation symbol for each antenna port to an appropriate subcarrier and multiplex it according to a user.
  • the OFDM / SC-FDM signal generator 306 modulates a complex modulation symbol for each antenna port, that is, an antenna specific symbol by an OFDM or SC-FDM scheme, thereby complex-valued time domain OFDM (Orthogonal) Generates a Frequency Division Multiplexing (SCC) symbol signal or a Single Carrier Frequency Division Multiplexing (SC-FDM) symbol signal.
  • the OFDM / SC-FDM signal generator 306 may perform Inverse Fast Fourier Transform (IFFT) on an antenna specific symbol, and a cyclic prefix (CP) may be inserted into a time domain symbol on which the IFFT is performed.
  • IFFT Inverse Fast Fourier Transform
  • CP cyclic prefix
  • the OFDM symbol is transmitted to the receiving apparatus through each of the transmission antennas 500-1, ..., 500-N t through digital-to-analog conversion, frequency up-conversion, and the like.
  • the OFDM / SC-FDM signal generator 306 may include an IFFT module and a CP inserter, a digital-to-analog converter (DAC), a frequency uplink converter, and the like.
  • the transmitters 100a and 100b may include a fast Fourier transformer.
  • the fast Fourier transform performs a fast fourier transform (FFT) on the antenna specific symbol and outputs the fast Fourier transformed symbol to the resource element mapper 305.
  • FFT fast fourier transform
  • the signal processing of the receivers 300a and 300b consists of the inverse of the signal processing of the transmitter.
  • the receivers 300a and 300b decode and demodulate the radio signals received through the antennas 500a and 500b from the outside and transmit them to the corresponding processors 400a and 400b.
  • the antennas 500a and 500b connected to the receivers 300a and 300b may include N r multiple receive antennas, and each of the signals received through the receive antennas is restored to a baseband signal and then multiplexed and MIMO demodulated.
  • the transmitters 100a and 100b restore the data sequence originally intended to be transmitted.
  • the receivers 300a and 300b may include a signal restorer for restoring a received signal to a baseband signal, a multiplexer for combining and multiplexing the received processed signals, and a channel demodulator for demodulating the multiplexed signal sequence with corresponding codewords.
  • the signal restorer, the multiplexer, and the channel demodulator may be configured as one integrated module or each independent module for performing their functions. More specifically, the signal restorer is an analog-to-digital converter (ADC) for converting an analog signal into a digital signal, a CP remover for removing a CP from the digital signal, and a fast fourier transform (FFT) to the signal from which the CP is removed.
  • ADC analog-to-digital converter
  • FFT fast fourier transform
  • FFT module for outputting a frequency domain symbol by applying a, and may include a resource element demapper (equalizer) to restore the frequency domain symbol to an antenna-specific symbol (equalizer).
  • the antenna specific symbol is restored to a transmission layer by a multiplexer, and the transmission layer is restored to a codeword intended to be transmitted by a transmission device by a channel demodulator.
  • the receivers 300a and 300b when the receivers 300a and 300b receive the SC-FDM signal, the receivers 300a and 300b further include an IFFT module.
  • the IFFT module performs an IFFT on the antenna specific symbol reconstructed by the resource element demapper and outputs the inverse fast Fourier transformed symbol to the multiplexer.
  • the scrambler 301, the modulation mapper 302, the layer mapper 303, the precoder 304, the resource element mapper 305, and the OFDM / SC-FDMA signal generator 306 are provided.
  • the processor (400a, 400b) of the transmitting device is a scrambler 301, modulation mapper 302, layer mapper 303, precoder 304, resource element mapper ( 305), it may be configured to include an OFDM / SC-FDMA signal generator 306.
  • the signal restorer, the multiplexer, and the channel demodulator are included in the receivers 300a and 300b.
  • the scrambler 301, the modulation mapper 302, the layer mapper 303, the precoder 304, the resource element mapper 305, and the OFDM / SC-FDMA signal generator 306 may include these.
  • the scrambler 301 and the modulation mapper 302, the layer mapper 303, the precoder 304, the resource element mapper 305, and the OFDM / SC-FDMA signal generator 306 are provided to the processors 400a and 400b.
  • the embodiments of the present invention may be equally applied.
  • the memories 200a and 200b may store a program for processing and controlling the processors 400a and 400b and may temporarily store information input and output.
  • the memory may be a flash memory type, a hard disk type, a multimedia card micro type or a card type memory (e.g. SD or XD memory, etc.), RAM Access Memory (RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic Disk, It can be implemented using an optical disk or the like.
  • 5 and 6 illustrate a physical channel and subcarriers constituting the physical channel.
  • one physical channel may have a predetermined bandwidth, for example, about 20 Mhz.
  • Each of the M physical channels has a bandwidth (WandWidth) of N fft * ⁇ f, and ⁇ f represents a frequency unit of a subcarrier.
  • a bandwidth of a size smaller than the maximum bandwidth may be used as each physical channel as shown in FIG.
  • a synchronization channel (SCH) for cell search may exist in all bandwidths. Therefore, since the synchronization channel (SCH) is located across all physical channels, all UEs can synchronize to the corresponding cell.
  • the UE or the base station may transmit and receive data using one or more physical channels.
  • the number of physical channels that can be used by the UE and the base station may be different.
  • the base station may use all M physical channels, and the UE may be implemented to use L physical channels.
  • the size of L may be less than or equal to M.
  • the number of L may vary depending on the type of UE.
  • FIG. 7 shows an example of an uplink and a downlink structure used in a communication system supporting multiple CCs.
  • structures of uplink (UL) and downlink (DL) may be designed in various forms.
  • UL uplink
  • DL downlink
  • the bandwidths of the UL and the DL may be the same. That is, M physical channels may be distributed to have the same number of physical channels in UL and DL, so that UL and DL may be designed to have a symmetric structure.
  • the M physical channels may be distributed such that the number of physical channels constituting UL / DL is different from each other. This is to configure a particular link to have an asymmetric structure to have a higher data yield.
  • FIG. 7 (a) shows an asymmetric structure in FDD mode
  • FIG. 7 (b) shows an asymmetric structure in time division duplexing (TDD) mode.
  • FIG. 8 illustrates an example of a radio frame structure used in a wireless communication system.
  • Figure 8 shows the structure of the radio frame and the position of the basic control channel of the 3GPP LTE system.
  • the radio frame structure of FIG. 8 may be applied to an FDD mode, a half FDD (H-FDD) mode, and a TDD mode.
  • a radio frame used in 3GPP LTE / LTE-A has a length of 10 ms (327200 Ts) and consists of 10 equally sized subframes.
  • Each subframe has a length of 1 ms and consists of two slots. 20 slots in one radio frame are sequentially numbered from 0 to 19. Each slot is 0.5ms long.
  • the time for transmitting one subframe is defined as a transmission time interval (TTI).
  • TTI transmission time interval
  • FIG. 9 shows an example of a DL / UL slot structure in a wireless communication system.
  • FIG. 9 shows a structure of a resource grid of a 3GPP LTE / LTE-A system.
  • a slot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
  • An OFDM symbol may mean a symbol period.
  • the RB includes a plurality of subcarriers in the frequency domain.
  • the OFDM symbol may be called an OFDM symbol, an SC-FDM symbol, or the like according to a multiple access scheme.
  • the number of OFDM symbols included in one slot may vary depending on the channel bandwidth and the length of the CP. For example, one slot includes seven OFDM symbols in the case of a normal CP, but one slot includes six OFDM symbols in the case of an extended CP.
  • FIG. 9 for convenience of description, a subframe in which one slot includes 7 OFDM symbols is illustrated. However, embodiments of the present invention can be applied to subframes having other numbers of OFDM symbols in the same manner.
  • a resource composed of one OFDM symbol and one subcarrier is called a resource element (RE).
  • RE resource element
  • a signal transmitted in each slot is represented by a resource grid including N DL / UL RB N RB sc subcarriers and N DL / UL symb OFDM or SC-FDM symbols.
  • N DL RB represents the number of resource blocks (RBs) in a downlink slot
  • N UL RB represents the number of RBs in an uplink slot
  • N DL symb represents the number of OFDM or SC-FDM symbols in a downlink slot
  • N UL symb represents the number of OFDM or SC-FDM symbols in an uplink slot
  • N RB sc represents the number of subcarriers constituting one RB.
  • a physical resource block is defined as N DL / UL symb consecutive OFDM symbols or SC-FDM symbols in the time domain and is defined by N RB sc consecutive subcarriers in the frequency domain. . Therefore, one PRB is composed of N DL / UL symb x N RB sc resource elements.
  • Each resource element in the resource grid may be uniquely defined by an index pair (k, 1) in one slot.
  • k is an index given from 0 to N DL / UL RB N RB sc -1 in the frequency domain
  • l is an index given from 0 to N DL / UL symb -1 in the time domain.
  • a primary sync channel (P-SCH) and a secondary sync channel (S-SCH) are transmitted in downlink for every radio frame for synchronization.
  • a physical downlink control channel (PDCCH) carrying resource allocation information of each downlink subframe is transmitted in each downlink subframe between a predetermined number of leading OFDM symbols.
  • the downlink control information may be transmitted in 0, 0-1, 0-2 OFDM symbols in the downlink subframe.
  • the number of OFDM symbols used for transmission of the control channel can be changed every subframe, and the physical control format indicator channel (PCFICH) carries information indicating the number of OFDM symbols used for transmission of the control channel. Therefore, the PCFICH is transmitted every subframe and carries a total of three pieces of information. Table 1 shows the control format indicator (CFI) of the PCFICH.
  • CFI control format indicator
  • PCFICH may be transmitted as in FIG. 10.
  • one resource element group (REG) includes four consecutive REs.
  • the REG is composed of only data subcarriers excluding a reference signal, and is generally used by applying a transmit diversity technique.
  • the PCFICH is shifted according to the cell identifier in the frequency domain.
  • PCFICH is transmitted only in the first OFDM symbol, that is, OFDM symbol 0. Accordingly, the receivers 300a and 300b may detect the PCFICH first and perform blind detection on the PDCCH.
  • FIG. 11 shows an example of a downlink subframe structure in a wireless communication system.
  • each subframe may be divided into a control region and a data region.
  • the control region includes one or more OFDM symbols starting from the first OFDM symbol.
  • the number of OFDM symbols used as a control region in a subframe may be independently set for each subframe, and the number of OFDM symbols is transmitted through a physical control format indicator channel (PCFICH).
  • PCFICH physical control format indicator channel
  • the base station may transmit various control information to the user device (s) through the control area.
  • a physical downlink control channel (PDCCH), a PCFICH, and a physical hybrid automatic retransmit request indicator channel (PHICH) may be allocated to the control region.
  • the base station may transmit data for the user equipment or the user equipment group through the data area.
  • Data transmitted through the data area is also called user data.
  • a physical downlink shared channel (PDSCH) may be allocated to the data area.
  • the user equipment may read the data transmitted through the PDSCH by decoding the control information transmitted through the PDCCH. For example, information indicating to which user equipment or group of user equipments the PDSCH data is transmitted and how the user equipment or user equipment group should receive and decode PDSCH data is included in the PDCCH and transmitted.
  • the PDCCH includes transport format and resource allocation information of a downlink shared channel (DL-SCH), resource allocation information of an uplink shared channel (UL-SCH), paging information about a paging channel (PCH), and the DL-SCH.
  • System information about the system allocation information of upper layer control messages such as random access response transmitted on PDSCH, collection of Tx power control commands for each UE in a certain UE group, voice over IP (VoIP) Carry activation information and the like.
  • a plurality of PDCCHs may be transmitted in the control region.
  • the UE may detect its own PDCCH by monitoring the plurality of PDCCHs.
  • the PDCCH has different sizes and uses of control information according to a downlink control indicator (DCI) format, and may vary in size according to a coding rate.
  • DCI format may be defined as follows.
  • the DCI format is independently applied to each UE, and PDCCHs of multiple UEs may be multiplexed in one subframe.
  • the PDCCH of each UE is independently channel coded to add a cyclic redundancy check (CRC).
  • CRC cyclic redundancy check
  • the CRC is masked with a unique identifier of each UE so that each UE can receive its own PDCCH.
  • blind detection is performed until every PDCCH of the corresponding DCI format receives a PDCCH having its own identifier.
  • FIG. 12 illustrates an example of an uplink subframe structure in a wireless communication system.
  • an uplink subframe may be divided into a control region and a data region in the frequency domain.
  • One or several physical uplink channels may be allocated to the control region to carry uplink control information (UCI).
  • One or several physical uplink shared channels may be allocated to the data region to carry user data.
  • the PUCCH for one UE is allocated to an RB pair in one subframe, and the RBs belonging to the RB pair occupy different subcarriers in two slots.
  • the PUCCH allocated in this way is expressed as that the RB pair allocated to the PUCCH is frequency-hopped at the slot boundary.
  • downlink control information may be configured in various forms. This will be described with reference to FIG. 13.
  • FIG. 13 illustrates methods of allocating a downlink control channel in a system using multiple carriers.
  • FIG. 13 (a) shows a first type of method for allocating a downlink control channel to a UE.
  • the base station may transmit information on downlink data transmitted on various carriers to the UE using PDCCH regions of various carriers.
  • the PDCCH can obtain a diversity gain.
  • data may not be received.
  • FIG. 13 (b) shows a second type of method for allocating a downlink control channel to a UE.
  • the PDCCH may be transmitted only on a specific carrier.
  • the second type there is an advantage that the amount of downlink control information can be minimized.
  • the channel state of the carrier is not good, it may be difficult to receive PDSCH data transmitted from another carrier.
  • FIG. 13 (c) shows a third type of method for allocating a downlink control channel to a UE.
  • a method of receiving data using L PDCCHs is a method of using independent PDCCHs for each carrier. Since the third type carries the PDCCH independently for each carrier, data can be transmitted from another carrier even if the fluidity is greatest and the channel state of a particular carrier is bad. Therefore, there is a characteristic that is robust to the channel environment. However, since control information repeatedly transmitted for each carrier may occur, unnecessary overhead occurs.
  • the processor 400b of the base station according to the present invention may allocate a downlink control signal according to any one of the first type, the second type, and the third type.
  • the transmitter 100a of the base station transmits the downlink control signal through the corresponding carrier under the control of the base station processor 400b.
  • the receiver 300a of the user equipment according to the present invention may receive downlink control signals and user data transmitted through one or more carriers.
  • the processor 400a of the user equipment receives the user data transmitted from a carrier on which the downlink control signal is transmitted or another carrier based on the downlink control signal received by the user equipment receiver 300a.
  • the receiver 300a may be controlled.
  • FIG. 14 shows an example of a carrier-specific subframe structure in a multi-carrier system.
  • one CC among multiple carriers may be configured in a form that an LTE UE can use.
  • the normal CC is configured according to the 3GPP LTE standard.
  • the normal CC allocates the PDCCH and the PDSCH to every downlink subframe.
  • one CC among multiple carriers may be configured to be used only by the LTE-A UE, and the CC may be configured to carry only PDSCH.
  • the control channel is allocated according to the second type in the control channel allocation method described with reference to FIG. 13, a carrier that carries only a PDSCH is generated.
  • one CC among multiple carriers is configured in a form that only an LTE-A UE can use, and the CC may be configured to carry both a PDCCH and a PDSCH.
  • a predetermined CC among multiple carriers may be configured to carry both a PDCCH and a PDSCH.
  • the PDCCH and PDSCH transmitted in the CC that can be used only by the LTE-A UE is a channel configured according to the 3GPP LTE-A standard.
  • the PDCCH and PDSCH for the LTE-A UE may be configured in a different form from the existing PDCCH and PDSCH transmitted in the normal CC, or the location allocated in the subframe may be different from the location in which the existing PDCCH and PDSCH are allocated. That is, the PDCCH and PDSCH for the LTE-A UE may be arranged in a subframe in a different form from the PDCCH and PDSCH for the LTE UE described with reference to FIG. 11.
  • the configuration method of the system may vary for each carrier.
  • all three types of CCs described above with reference to FIGS. 14 (a) to 14 (c) may be configured in downlink, or different types of CCs may be configured. Alternatively, only some types of CCs may be configured.
  • the processor 400b of the base station may configure a plurality of carriers for a predetermined user equipment.
  • the base station processor 400b may configure each carrier according to one of FIGS. 14 (a) to 14 (c).
  • the transmitter 100b of the base station may transmit the configured plurality of carriers to the user equipment under the control of the base station processor 400b.
  • the processor 400a of the LTE UE may receive only a CC configured in the form of FIG. 14A by controlling the receiver 300a of the LTE UE.
  • the processor 400a of the LTE-A UE controls the receiver 300a of the LTE-A UE to establish a CC composed of FIGS. 14 (a) to 14 (c). All can be received.
  • the design of the control channel in consideration of the frequency channel characteristics of each carrier in the multi-carrier system has a significant effect on the system optimization. Therefore, in order to optimize the system, it is important to appropriately use the optimal transmission / reception technique and system parameters for each carrier.
  • the UE for the existing system and the UE for the new system may be modified by appropriately modifying the control channel. There is a need to achieve backward compatibility that allows all to work.
  • embodiments of the present invention may be applied based on a carrier wave. That is, when there are several carriers having one or more physical channels, the present invention can be applied from the viewpoint of the carrier. In this case, the embodiments of the present invention may be applied by replacing the term carrier used in the following description with a physical channel.
  • the base station may transmit a plurality of PDCCHs allocated to a plurality of carriers to the UE in various types as shown in FIG. 13.
  • the first type and the second type may transmit various downlink control information for a specific UE at a time.
  • a grouping of a plurality of PDCCHs for one UE is referred to as multi-PDCCH for convenience of description.
  • a grouping of a plurality of PUCCHs for uplink is called a multi-PUCCH.
  • Multi-PDCCH may be largely configured by joint coding or separate coding.
  • the base station may perform integrated coding by channel coding control information on downlink data of all carriers at the same time. Since one centralized PDCCH has information on all downlink data transmissions in the integrated coding, a UE must receive a centralized PDCCH to receive downlink data transmitted through multiple carriers. have.
  • the base station may transmit a plurality of PDCCH information to the UE using a separate coding scheme.
  • the base station may configure the multi-PDCCH using individual coding. For example, the base station may configure the multi-PDCCH by encoding the PDCCH for the data of each carrier, and packing each of the encoded PDCCH. That is, the base station can transmit the multi-PDCCH to the UE through a specific resource region by coding and grouping several PDCCHs, respectively.
  • At least one PDCCH region in a carrier may be transmitted to the UE.
  • the multi-PDCCH may be transmitted in the first type or the second type form described in FIG. 13.
  • each PDCCH of the multi-PDCCH is preferably encoded by one channel encoder, but may be encoded by each channel encoder.
  • the CRC for error checking may be added for each PDCCH or may be added for each multi-PDCCH. It is also possible to add to the individual PDCCH and multi-PDCCH in duplicate. When the CRC is added to each PDCCH and the multi-PDCCH, the length of the CRC may be different.
  • a multi-PDCCH with a plurality of PDCCHs
  • information on which CC each PDCCH is a PDCCH for is required.
  • CRC masking of a specific pattern may be applied to each PDCCH.
  • the UE may distinguish which CC the PDCCH is for the PDCCH using the CRC masking pattern applied to each PDCCH.
  • FIG. 15 shows an example in which a multi-PDCCH is transmitted in a multi-carrier system.
  • FIG. 15 illustrates a method of transmitting a multi-PDCCH using the second type of FIG. 13.
  • downlink control information may be transmitted only through a specific carrier, for example, CC_1 channel.
  • control channels are not allocated to subframes on other carriers CC_2 to CC_L.
  • subframes on CC_1 are configured as shown in FIG. 14A or 14C
  • subframes on CC_2 to CC_L are configured as shown in FIG. 14B.
  • each multi-PDCCH may be transmitted through all carriers or may be transmitted through multiple carriers.
  • the multi-PDCCH for one LTE-A UE may be transmitted on a carrier different from the carrier on which the actual PDSCH is transmitted.
  • information indicating whether a plurality of PDCCHs included in the multi-PDCCH is information associated with downlink data transmitted on which CC is needed.
  • this information will be referred to as CC indication information to describe the present invention.
  • the base station may inform the UE of the CC indication information in n-bit using a specific bit field of the PDCCH.
  • the base station may configure the multi-PDCCH by masking the PDCCH with a CRC specified for each CC. In this case, the UE can know the physical channel associated with each PDCCH by demasking PDCCHs included in the multi-PDCCH with CRC.
  • CC indication information may be defined as shown in the following table, for example.
  • the number of CCs is not 4, of course, CIBF bits of different sizes may be defined and used.
  • the size of the CIBF for downlink transmission and the size of the CIBF for uplink transmission may be different.
  • the CIBF for downlink transmission is called DL-CIBF
  • the CIBF for uplink transmission is called UL-CIBF.
  • CIBF should be applied to all PDCCHs. If only one CC is used, the base station may reserve the use of CIBF and transmit null information or default value promised between the base station and the UE to the UE. Alternatively, the corresponding bit of the CIBF may be used to transmit other information. It is also possible to eliminate the CIBF and not send it at all.
  • the number of bits of the CIBF may vary depending on the LTE-A UE. That is, since the number of CCs available for each UE may vary, the CIBF may vary according to the UE.
  • the number of bits of the CIBF depends on the number of CCs, the number of CCs or the number of bits of the CIBF may be notified to the UE through RRC (Radio Resource Control) signaling.
  • RRC Radio Resource Control
  • the number of bits of the CIBF may be defined in a predefined form.
  • the number of bits of the CIBF may be determined based on the UE supporting the most CC among the LTE-A UEs. That is, if the number of CCs CC max that can be supported by the UE that supports the most CCs in the LTE-A system, it is possible to be predetermined as floor ⁇ log 2 (CC max ) ⁇ as the number of bits of CIBF.
  • the base station processor 400b may allocate a PDCCH and a corresponding PDSCH to a CC and generate CC indication information indicating the CC on which the corresponding PDSCH is transmitted.
  • the base station processor 400b may generate the PDCCH to include the CC indication.
  • the CC indication information may be generated in the form of an RRC signaling signal.
  • the base station transmitter 100b may transmit the CC indication information to the user equipment.
  • the receiver 300a of the user equipment may receive the PDCCH and the CC indication information, and the processor 100a of the user equipment may determine in which CC the PDSCH associated with the PDCCH is transmitted based on the CC indication information. Able to know.
  • the processor 100a of the user equipment may control the user equipment receiver 300a to receive the PDSCH in the CC based on the PDCCH.
  • FIG. 16 shows an example of transmission of a multi-PDCCH in a multi-carrier system.
  • FIG. 16 shows an example of transmission of downlink control information according to the first type of FIG. 13.
  • the base station may configure a CC subset to transmit the multi-PDCCH and transmit it to the UE.
  • the base station may transmit a PDCCH or a multi-PDCCH for a specific UE, for example, UE_1 only in N (here, N ⁇ L) CC subsets.
  • UE_1 may be configured to receive PDCCH or multi-PDCCH only in the N CC subsets.
  • the number of CCs that should be attempted to decode is reduced as compared with the case where blind detection is performed on all L CCs.
  • the base station may distribute a plurality of PDCCHs for the UE_1, respectively, and transmit the specific CCs in the CC subset, for example, CC_1 and CC_L to the UE_1.
  • the CC subset that each UE should receive may be determined through RRC signaling or may be determined according to a predefined rule.
  • the base station processor 400b may transmit user data to a predetermined UE through a plurality of carriers, for example, L carriers.
  • the base station processor 400b may allocate the PDCCH for the predetermined UE only to the CC subset defined by N (here, N ⁇ L).
  • the transmitter 100b of the base station may transmit a control signal for user data transmitted over L carriers over N CCs in the CC subset under the control of the base station processor 400b.
  • the processor 400a of the predetermined user equipment controls the user equipment receiver 300a to perform blind detection on N CCs in the CC subset to receive the control signal.
  • the user device processor 400a may control the user device receiver 300a to receive user data transmitted over the L CCs based on the control signal.
  • CC in which the PDCCH or the multi-PDCCH of the UE_1 is not transmitted may be used for transmission of the PDCCH or the multi-PDCCH of another UE, for example, UE_2.
  • a CC included in the CC subset for the UE_1 may also transmit PDCCH or multi-PDCCH of another UE, for example, UE_2.
  • the base station may transmit the PDCCH from the CC transmitting the PDSCH using another CC indication information, but from another CC. That is, the base station may configure a CC that does not transmit the PDCCH. However, the base station cannot configure only the CC transmitting only the PDSCH without the CC transmitting the PDCCH. Therefore, in order to use the CC transmitting only the PDSCH, the base station also needs to configure the CC transmitting the PDCCH.
  • a CC configured to transmit only a PDSCH without a PDCCH is referred to as a PDSCH dedicated CC.
  • FIG. 17 shows another example of transmission of a multi-PDCCH in a multi-carrier system.
  • FIG. 17 shows an example of transmission of downlink control information according to the second type of FIG. 13.
  • a base station may transmit a PDSCH for UE_1 to the UE_1 through CC_1, CC_2, and CC_L, and transmit PDCCHs for the PDSCH through CC_1 and CC_L.
  • CC_2 is a PDSCH dedicated CC.
  • the UE_1 may acquire PDCCHs for the UE_1 in the CC_1 and CC_L, and obtain the PDCCH transmitted through the CC_1 and CC_2 and CC_L channels based on the PDCCHs.
  • the UE_1 may detect a PDSCH transmitted through CC_2 based on the PDCCH transmitted through the CC_1 channel. Meanwhile, the UE_1 may be configured not to perform blind detection for finding its own PDCCH on CC_2 configured to transmit only PDSCH.
  • the base station processor 400b may allocate only a PDSCH to a predetermined CC without a PDCCH. However, the PDCCH for the PDSCH is allocated to another CC.
  • the transmitter 100b of the base station may transmit a PDSCH for a predetermined UE through the predetermined CC and control a PDCCH for the PDSCH through a CC different from the predetermined CC under the control of the base station processor 400b.
  • the predetermined UE may receive the PDCCH through the receiver 300a and receive the PDSCH transmitted through the predetermined CC.
  • the processor 400a of the predetermined UE may control the receiver 300a to not perform blind detection for detecting a PDCCH on the predetermined CC.
  • the processor 400a may control the receiver 300a to perform blind detection in a CC that is not a PDSCH dedicated CC.
  • the processor 400a may control the receiver 300a to receive the PDSCH transmitted through the predetermined CC based on the PDCCH detected through the blind detection.
  • FIG. 18 shows another example of transmission of a multi-PDCCH in a multi-carrier system.
  • FIG. 18 illustrates an example of applying downlink control information transmission according to the second type of FIG. 13 over a plurality of subframes.
  • a PDCCH associated with a PDSCH transmitted in the PDSCH dedicated CC is transmitted through another CC.
  • the PDCCH is preferably transmitted in subframe (s) transmitted before the subframe in which the PDSCH is transmitted.
  • the PDCCH should be transmitted in at least the same subframe in which the PDSCH is transmitted. That is, if k is a subframe offset that is a difference between a subframe in which a PDSCH is transmitted and a subframe in which the PDCCH is transmitted, k has a value of 0 or more. This can be expressed as follows.
  • the subframe PDSCH indicates the number of the subframe in which the PDSCH is transmitted
  • the subframe PDCCH indicates the number of the subframe in which the PDCCH for the PDSCH is transmitted.
  • the PDSCH is transmitted after the PDCCH is transmitted. Accordingly, since the UE acquires its own PDCCH through blind detection and receives the corresponding PDSCH in the data region following, the UE does not need to buffer the related PDSCH while receiving the PDCCH. However, when the PDCCH and the corresponding PDSCH are transmitted in the same subframe, the UE should buffer the PDSCH transmitted through another CC during the time interval for detecting the PDCCH. For example, referring to FIG.
  • a base station transmits a PDCCH for UE_1 through CC_1 in the first three symbols in a subframe and transmits a PDSCH for the UE_1 through CC_2 in the subframe.
  • the UE_1 performs blind detection on the PDCCH (s) for the UE_1 for CC_1 over the first three symbols of the subframe.
  • PDSCH is transmitted through CC_2 as well as PDCCH.
  • the UE_1 receives the PDSCH through the CC_2 in the first three symbol periods, the UE cannot decode the PDSCH transmitted in the first three symbol periods since it has not yet acquired its own PDCCH.
  • the UE_1 buffers signals transmitted through the PDSCH dedicated CC during the symbol period in which the PDCCH (s) for the UE_1 are transmitted.
  • Each UE may utilize a portion of the memory 200a as a buffer to buffer data transmitted through the PDSCH dedicated CC in a symbol period for performing blind detection of the PDCCH.
  • the UE acquires its own PDCCH through blind detection, the corresponding PDSCH including the buffered data may be decoded based on the obtained PDCCH.
  • implementing a UE that performs buffering is more complicated than implementing a UE that does not perform buffering.
  • a certain amount of memory 200a must be reserved for buffering. Therefore, it is preferable to define k to have a value greater than zero so as to lower the implementation complexity of the UE by buffering. This can be expressed as follows.
  • k may be understood to determine the subframe in which the PDCCH for a particular PDSCH is transmitted. Conversely, it may be interpreted as specifying a subframe in which the PDSCH associated with the PDCCH is transmitted. In this case, k may be configured to be a fixed value or may be configured differently for each UE and transmitted to the corresponding UE through the corresponding PDCCH or RRC.
  • k is preferably set to a small value, for example, 1 or 2. Too large value of k means that the transmission time difference between the PDCCH and the corresponding PDSCH is large. In this case, the channel state of the CC that is the basis of the scheduling of the PDSCH is changed, the scheduling information of the PDSCH transmitted over the PDCCH may no longer be valid. Therefore, in consideration of the time variability of the channel state, it is preferable that k is defined to have a value less than or equal to a predetermined value.
  • the base station may transmit the PDCCH and the corresponding PDSCH so that k has a value greater than or equal to 1 and less than the predetermined value. If k is not a fixed value, the base station may transmit the k value to the UE through the PDCCH or RRC signaling.
  • the base station may transmit user data for UE_1 over CC_1, CC_2, and CC_L, and transmit control information for the user data through CC_1.
  • the base station transmits the user data after k subframes after the subframe N through which the control information is transmitted in CC_2.
  • the base station may transmit PDSCH for user data transmitted in CC_2 which is a PDSCH-dedicated CC before k subframes.
  • PDCCH_1, PDCCH_2, and PDCCH_L represent control information transmitted through CC_1, CC_2, and CC_L
  • PDSCH_1, PDSCH_2, and PDSCH_3 represent user data transmitted through CC_1, CC_2, and CC_L, respectively.
  • the base station may transmit PDCCH_1, PDCCH_2, and PDCCH_L in CC-1 and CCSCH and CC_L in subframe N, respectively, in several leading symbols of symbols constituting subframe N.
  • the base station may transmit PDCCH_1 and corresponding PDSCH_1 through CC_1 in subframe N + k, and transmit CC_2 in PDSCH_2 corresponding to PDCCH_2 transmitted in subframe N in subframe N + k. .
  • the base station transmits the PDSCH_2 corresponding to the PDCCH_2 transmitted in subframe N to the UE_1 through CC_2 in subframe N + k rather than the subframe N.
  • PDSCH_L corresponding to PDCCH_3 may be transmitted on CC_L in subframe N. That is, the base station may allocate PDCCH_L to a symbol earlier than PDSCH_L in configuring subframe N.
  • UE_1 since control channel (s) are allocated to the first symbol (s) of subframe N, when PDSCH_L is transmitted in a symbol subsequent to a symbol in which PDCCH_L is transmitted, UE_1 does not buffer PDSCH_L even if PD_1__ is decoded. Because you can.
  • UE_1 detects PDCCH_1 and PDCCH_2 and PDCCH_L transmitted through CC_1 in subframe N, receives PDSCH_1 transmitted through CC_1 in subframe N based on the PDCCH_1 and in the subframe N based on the PDCCH_L.
  • PDSCH_1 transmitted through the CC_L may be received.
  • PDSCH_2 transmitted through CC_2 in subframe N + k may be received based on the PDCCH_2.
  • the UE_2 may receive the PDCCH_1 transmitted through the CC_1 at the N + k and the PDSCH_1 transmitted through the CC_1 at the N + k based on the PDCCH_1 received at the N + k. have.
  • a subframe in which a PDCCH is transmitted may be different from a subframe in which a corresponding PDSCH is transmitted.
  • the subframe in which the PDCCH is transmitted and the subframe in which the corresponding PDSCH is transmitted may also be different in the downlink control information transmission method according to the first type of FIG. 13.
  • the subframe offset k which is a difference between the subframe in which the PDSCH is transmitted and the subframe in which the PDCCH is transmitted, may be defined as a fixed value, or may be defined as a value that varies depending on the characteristics of the carrier or the channel environment. If k is not a fixed value, the base station needs to transmit information indicating the subframe offset k to the corresponding user equipment through PDCCH or RRC signaling.
  • the subframe offset may be transmitted on the corresponding PDCCH. Alternatively, it may be transmitted to the UE_1 through RRC signaling.
  • the UE_1 may know in which subframe a PDSCH corresponding to a PDCCH is transmitted based on the subframe offset.
  • a PDSCH corresponding to the PDCCH or a PDSCH corresponding to another PDCCH will be transmitted after a symbol period in which the PDCCH is transmitted, so that the base station does not transmit information indicating the subframe offset to the user equipment. It may not.
  • the processor 400b of the base station may allocate a PDCCH and a corresponding PDSCH to different CCs such that k has a value greater than or equal to 1 and a value less than or equal to the predetermined value.
  • the base station processor 400b may allocate the PDCCH and the corresponding PDSCH such that k has a value of 0 or more and a value less than or equal to the predetermined value.
  • the base station processor 400b controls the transmitter 100b of the base station to transmit the PDCCH and the corresponding PDSCH to the predetermined UE through different CCs, but transmits the corresponding PDSCH to the k subframes of the subframe in which the PDCCH is transmitted.
  • the base station transmitter 100b may be controlled to transmit after a frame.
  • the base station processor 400b may generate information indicating the subframe offset k, control the base station transmitter 100b, and transmit the information to the predetermined UE.
  • the base station processor may control the base station transmitter 100b to transmit the subframe offset k through a corresponding PDCCH, or control the base station transmitter 100b to transmit in the form of RRC signaling.
  • the base station processor 400b may control the base station transmitter 100b to transmit CC indication information indicating a CC on which the PDSCH is transmitted to the predetermined UE.
  • the processor 400a of the given UE may receive the PDCCH and the subframe offset to know in which subframe the PDSCH associated with the PDCCH is transmitted. Accordingly, the processor 400a of the predetermined UE may receive a PDSCH corresponding to the PDCCH through the CC based on the PDCCH and the subframe offset. The processor 400a may know the corresponding CC on which the PDSCH is transmitted based on the CC indication information transmitted by the base station.
  • FIG. 19 shows an example of a CRS pattern according to an antenna port.
  • the CRS patterns for each antenna port are orthogonal to each other in the time / frequency domain. If the transmitter has one antenna port, the antenna port transmits a CRS pattern for antenna port 0. When 4Tx transmission is used in downlink, CRSs for antenna ports 0 to 3 are simultaneously used. However, in order to minimize interference between RS signals, when a predetermined antenna port transmits its CRS, the predetermined antenna port does not transmit a signal in an RE where CRSs for other antenna ports are transmitted.
  • the PDCCH is transmitted to the user equipment only in a single antenna or transmit diversity mode using CRS.
  • CRS Common Reference Signal or Cell-specific Reference Signal
  • the 3GPP LTE-A standard which has been carried out to date, defines to transmit the PDCCH in the same format as that defined in the 3GPP LTE standard.
  • the LTE-A UE may receive a CRS to demodulate the PDCCH. Therefore, when transmitting a PDCCH to the LTE-A UE, the base station should transmit not only the PDCCH but also the CRS.
  • the base station when the base station configures a CC that can only receive the LTE-A UE, the CC transmits the CRS only in a specific subframe.
  • the base station may transmit CRS in specific server frame (s) in one radio frame and transmit only PDCCH and PDSCH or PDSCH without CRS in remaining subframes.
  • the CRS is transmitted only in a predetermined subframe, since the RE, in which the CRS is transmitted in the existing 3GPP LTE system, can be used to transmit the PDCCH or the PDSCH, downlink transmission data can be increased in the corresponding CC.
  • the CRS pattern for the LTE-A UE may be defined differently from the CRS pattern according to the 3GPP LTE standard. For example, it is also possible to configure the CRS to be transmitted only in a specific OFDM symbol among the OFDM symbols constituting the subframe in which the CRS is transmitted. However, for convenience of description, it is assumed that the 3GPP LTE-A system uses the same CRS pattern as the 3GPP LTE system. Taking 4Tx transmission as an example, the base station may transmit the CRS patterns of FIGS. 19 (a) to 19 (d) at antenna ports 0 to 3 through CC for the LTE-A UE, respectively.
  • the base station may be configured to carry the CC for the LTE-A UE to carry the PDCCH and PDSCH for the LTE-A UE as shown in FIG. 14 (c), or may be configured to carry only the PDSCH as shown in FIG. 14 (b). have. That is, the base station processor 400b may allocate both the PDCCH and the PDCCH for the LTE-A UE to the CC for the LTE-A UE (in the case of FIG. 14 (c)), or may assign only the PDSCH. (In case of Fig. 14 (b)).
  • the subframe in which the CRS is transmitted may be predefined. For example, it may be predetermined that the CRS is transmitted in subframe 0 and subframe 5 of the 10 subframes in the radio frame. In this case, the transmission period of the CRS is 5 subframes. Alternatively, the transmission period of the CRS may be changed for each base station or UE.
  • the base station may determine the transmission period of the CRS and transmit information indicating the transmission period to the UE.
  • the transmission period may be transmitted through the PDCCH or to the UE through RRC signaling.
  • the base station processor 400b may determine a transmission period of the CRS, and control the base station transmitter 100b to transmit information indicating the transmission period to the UE.
  • the base station processor 400b may control the base station transmitter 100b to transmit the information to the UE through PDCCH or RRC signaling.
  • the UE may know a subframe in which the CRS is transmitted based on the information indicating the transmission period. In this case, the UE may detect the CRS only in the subframe that actually carries the CRS, not all subframes in the CC, and estimate the channel state based on the detected CRS.
  • the receiver 300a of the UE receives the information indicating the transmission period and delivers the information to the processor 400a of the UE.
  • the UE processor 400a may control the receiver 300a to detect and measure a channel state by detecting a CRS in a subframe corresponding to the transmission period based on the transmission period.
  • Embodiments of the present invention may be used in a base station or terminal, or other equipment in a wireless communication system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Lors de l'émission de données d'utilisateur destinées à un dispositif d'utilisateur et d'informations de commande concernant les données d'utilisateur à destination du dispositif d'utilisateur au moyen d'une pluralité d'ondes porteuses par une station de base d'un système de communication sans fil, les informations de commande peuvent être émises par l'intermédiaire d'une partie de la pluralité d'ondes porteuses, et les ondes porteuses par l'intermédiaire desquelles les seules données émises sont les données d'utilisateur peuvent être générées sans les informations de commande. Dans le cas présent, la station de base émet, au niveau d'un certain nombre de sous-trames faisant suite à des sous-trames dans lesquelles les informations de commande sont émises, les données d'utilisateur par l'intermédiaire des ondes porteuses auxquelles ne sont allouées que les données d'utilisateur. Le dispositif d'utilisateur peut ainsi minimiser la mise en tampon des données d'utilisateur pendant la détection des informations de commande et décoder les données d'utilisateur.
PCT/KR2010/008034 2009-11-27 2010-11-15 Procédé et station de base d'émission d'informations de commande descendantes, et procédé et dispositif utilisateur pour la réception d'informations de commande descendantes WO2011065695A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/511,623 US9178670B2 (en) 2009-11-27 2010-11-15 Downlink control information transmitting method and base station, and downlink control information receiving method and user device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US26470109P 2009-11-27 2009-11-27
US61/264,701 2009-11-27
KR1020100112046A KR101711866B1 (ko) 2009-11-27 2010-11-11 하향링크 제어정보 전송방법 및 기지국과, 하향링크 제어정보 수신방법 및 사용자기기
KR10-2010-0112046 2010-11-11

Publications (2)

Publication Number Publication Date
WO2011065695A2 true WO2011065695A2 (fr) 2011-06-03
WO2011065695A3 WO2011065695A3 (fr) 2011-11-03

Family

ID=44067056

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/008034 WO2011065695A2 (fr) 2009-11-27 2010-11-15 Procédé et station de base d'émission d'informations de commande descendantes, et procédé et dispositif utilisateur pour la réception d'informations de commande descendantes

Country Status (2)

Country Link
US (1) US9178670B2 (fr)
WO (1) WO2011065695A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103517430A (zh) * 2012-06-29 2014-01-15 华为技术有限公司 数据块的传输方法及装置
KR20150013542A (ko) * 2012-05-21 2015-02-05 소니 주식회사 복수의 서브프레임에서 자원을 할당하기 위한 시스템, 방법 및 기지국
KR20150013543A (ko) * 2012-05-21 2015-02-05 소니 주식회사 복수의 서브프레임에서 자원을 할당하기 위한 방법 및 단말 장치

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8983391B2 (en) * 2011-08-12 2015-03-17 Sharp Kabushiki Kaisha Signaling power allocation parameters for uplink coordinated multipoint (CoMP)
US9480059B2 (en) * 2012-06-15 2016-10-25 Industrial Technology Research Institute Method of indicating downlink control channel and related communication device
US9807747B2 (en) 2012-06-15 2017-10-31 Industrial Technology Research Institute Method of handling downlink control information and related communication device
IN2015MN00857A (fr) 2013-01-14 2015-08-07 Lg Electronics Inc
US9485763B2 (en) * 2013-01-14 2016-11-01 Lg Electronics Inc. Method and user equipment for receiving downlink signal and method and base station for transmitting downlink signal
CN104871447B (zh) * 2013-01-17 2018-02-23 英特尔Ip公司 在无线通信网络中映射特殊子帧
US9252998B2 (en) 2013-02-25 2016-02-02 Itron, Inc. Radio to detect and compensate for frequency misalignment
US9077487B2 (en) * 2013-02-25 2015-07-07 Itron, Inc. Radio to support channel plans of arbitrary width and/or spacing
US9014307B2 (en) 2013-02-25 2015-04-21 Itron, Inc. Radio to analog-to-digital sample rate decoupled from digital subsystem
US9426680B2 (en) 2013-02-25 2016-08-23 Itron, Inc. Real-time radio spectrum assessment engine
EP3595388A1 (fr) * 2014-12-30 2020-01-15 Huawei Technologies Co., Ltd. Procédé et appareil de transmission d'informations de commande
JP2018050087A (ja) * 2015-01-29 2018-03-29 シャープ株式会社 端末装置、基地局装置、および通信方法
WO2016179833A1 (fr) * 2015-05-14 2016-11-17 华为技术有限公司 Équipement d'utilisateur, nœud de réseau, et procédé de détermination de mode de transmission de signal de liaison descendante de cellule
US9992124B2 (en) 2015-10-09 2018-06-05 Itron, Inc. Multi-channel decoder architecture
US10425923B2 (en) * 2016-08-01 2019-09-24 Qualcomm Incorporated Uplink channel multiplexing and waveform selection

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7751370B2 (en) * 2001-07-13 2010-07-06 Qualcomm Incorporated Method and apparatus for forward link rate scheduling
US6335922B1 (en) * 1997-02-11 2002-01-01 Qualcomm Incorporated Method and apparatus for forward link rate scheduling
GB9913697D0 (en) * 1999-06-11 1999-08-11 Adaptive Broadband Ltd Dynamic channel allocation in a wireless network
DE10206875A1 (de) * 2002-02-18 2003-08-28 Philips Intellectual Property Verfahren und Schaltungsanordnung zum Überwachen und Verwalten des Datenverkehrs in einem Kommunikationssystem mit mehreren Kommunikationsknoten
US8179855B2 (en) * 2006-02-07 2012-05-15 Research In Motion Limited Method, and associated apparatus, for communicating data at reduced transmission latency in radio communication system having slotted interface
US8649333B2 (en) * 2006-03-20 2014-02-11 Panasonic Corporation Radio communication system, radio transmission apparatus, and resource allocation method
US7627683B2 (en) * 2006-12-27 2009-12-01 At&T Mobility Ii Llc System and method for dynamically refreshing an active home screen
KR101314611B1 (ko) * 2007-01-30 2013-10-07 엘지전자 주식회사 주파수 선택성에 따른 ｍｃｓ 인덱스 선택 방법, 장치, 및이를 위한 통신 시스템
KR20080092222A (ko) * 2007-04-11 2008-10-15 엘지전자 주식회사 Ｔｄｄ 시스템에서의 데이터 전송 방법
EP2187568A4 (fr) * 2007-08-31 2014-09-24 Fujitsu Ltd Procédé et appareil d'accès sans fil
US8340014B2 (en) * 2007-12-26 2012-12-25 Lg Electronics Inc. Method for transmitting and receiving signals using multi-band radio frequencies
JP2009223493A (ja) * 2008-03-14 2009-10-01 Oki Semiconductor Co Ltd インターフェース情報出力システム
CN101657017B (zh) * 2008-09-22 2012-09-05 华为技术有限公司 一种资源调度方法、基站以及通信系统
US20100098179A1 (en) * 2008-10-16 2010-04-22 Interdigital Patent Holdings, Inc. Method and apparatus for transmitting and receiving orthogonal frequency division multiplex-based transmissions
EP3745616A1 (fr) * 2009-04-24 2020-12-02 LG Electronics Inc. Procédé et appareil pour transmettre et recevoir un signal de commande pour fusionner des porteuses lors d'une transmission
US9178676B2 (en) * 2009-05-14 2015-11-03 Lg Electronics Inc. Device and method for monitoring control channel in multicarrier system
WO2010143911A2 (fr) * 2009-06-11 2010-12-16 엘지전자 주식회사 Dispositif et procédé de rapport de mesures et dispositif dans un système de communication sans fil
KR102123915B1 (ko) * 2009-06-15 2020-06-18 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 캐리어 집성을 위한 제어 채널 공유 시스템 및 방법
US8432859B2 (en) * 2009-06-22 2013-04-30 Alcatel Lucent Indicating dynamic allocation of component carriers in multi-component carrier systems
WO2011005032A2 (fr) * 2009-07-07 2011-01-13 엘지전자 주식회사 Procédé et appareil pour la programmation de porteuses dans un système à porteuses multiples
KR101707867B1 (ko) * 2009-07-28 2017-02-17 엘지전자 주식회사 다중반송파 지원 광대역 무선 통신 시스템에서의 반송파 관리 절차 수행 방법 및 장치
KR101723411B1 (ko) * 2009-08-21 2017-04-05 엘지전자 주식회사 멀티 캐리어 시스템의 슬립모드 동작 방법 및 장치
JP5271213B2 (ja) * 2009-09-14 2013-08-21 株式会社日立製作所 基地局、端末及び無線通信システム
US8687602B2 (en) * 2009-09-29 2014-04-01 Apple Inc. Methods and apparatus for error correction for coordinated wireless base stations
US9485060B2 (en) * 2009-10-01 2016-11-01 Interdigital Patent Holdings, Inc. Uplink control data transmission
WO2011053857A1 (fr) * 2009-10-30 2011-05-05 Research In Motion Limited Commutation d'ensembles d'informations de commande descendantes lors de l'utilisation d'une agregation de porteuses
US8767641B2 (en) * 2009-11-16 2014-07-01 Texas Instruments Incorporated Carrier indication in a bandwidth aggregated wireless communications systems
WO2011083746A1 (fr) * 2010-01-08 2011-07-14 Sharp Kabushiki Kaisha Procédé et système de communication mobile pour la transmission d'un signal de référence de sondage, et station de base, équipement utilisateur et circuit intégré incorporés
KR101800016B1 (ko) * 2010-01-21 2017-11-22 엘지전자 주식회사 다중 반송파 시스템에서 하이브리드 자동 재전송 요청 수행 방법 및 장치
KR101771255B1 (ko) * 2010-03-30 2017-08-25 엘지전자 주식회사 다중 반송파 시스템에서 반송파 지시 필드 설정 방법
WO2011136554A2 (fr) * 2010-04-27 2011-11-03 엘지전자 주식회사 Procédé et appareil de transmission entrée multiple sortie multiple (mimo) en liaison montante
EP3432501B1 (fr) * 2010-04-30 2020-08-19 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Système et procédé permettant de partager un canal de commande pour l'agrégation de porteuses
US20110267948A1 (en) * 2010-05-03 2011-11-03 Koc Ali T Techniques for communicating and managing congestion in a wireless network
TWI554137B (zh) * 2010-05-26 2016-10-11 財團法人工業技術研究院 控制通道配置方法與控制通道搜尋方法及其通信裝置
US8923223B2 (en) * 2010-08-16 2014-12-30 Qualcomm Incorporated Physical uplink control channel resource allocation for multiple component carriers
EP2624471A1 (fr) * 2010-09-28 2013-08-07 Fujitsu Limited Procédé, équipement utilisateur, station de base, et système de détermination d'une porteuse de composante ordonnancée dans un ordonnancement de porteuses croisées

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CATT ET AL.: 'Design of DL Control Channel for LTE-A with Carrier Aggregation' 3GPP TSG RAN WG1 #57BIS, RL-092785 29 June 2009, *
INTERDIGITAL: 'Multiple Component Carrier and Carrier Identification' 3GPP TSG RAN WG1 #57BIS, RL-092589 29 June 2009, *
ITRI: 'Carrier Identification in PDCCH' 3GPP TSG RAN WG1 #57BIS, RL-092683 29 June 2009, *
LG ELECTRONICS: 'Component carrier indication by PDCCH for multiple carrier aggregation in LTE-Advanced' 3GPP TSG RAN WG1 #57BIS, RL-092500 29 June 2009, *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150013542A (ko) * 2012-05-21 2015-02-05 소니 주식회사 복수의 서브프레임에서 자원을 할당하기 위한 시스템, 방법 및 기지국
KR20150013543A (ko) * 2012-05-21 2015-02-05 소니 주식회사 복수의 서브프레임에서 자원을 할당하기 위한 방법 및 단말 장치
KR102047573B1 (ko) * 2012-05-21 2019-11-21 소니 주식회사 복수의 서브프레임에서 자원을 할당하기 위한 시스템, 방법 및 기지국
KR102047574B1 (ko) * 2012-05-21 2019-11-21 소니 주식회사 복수의 서브프레임에서 자원을 할당하기 위한 방법 및 단말 장치
US11102772B2 (en) 2012-05-21 2021-08-24 Sony Corporation Method and terminal device for allocating resources in a plurality of subframes
CN103517430A (zh) * 2012-06-29 2014-01-15 华为技术有限公司 数据块的传输方法及装置
CN103517430B (zh) * 2012-06-29 2016-09-28 华为技术有限公司 数据块的传输方法及装置

Also Published As

Publication number Publication date
US9178670B2 (en) 2015-11-03
WO2011065695A3 (fr) 2011-11-03
US20120269151A1 (en) 2012-10-25

Similar Documents

Publication Publication Date Title
WO2011065695A2 (fr) Procédé et station de base d'émission d'informations de commande descendantes, et procédé et dispositif utilisateur pour la réception d'informations de commande descendantes
WO2012108616A1 (fr) Procédé de transmission d'informations de commande de liaison montante et équipement utilisateur, et procédé de réception d'informations de commande de liaison montante et station de base
WO2019143131A1 (fr) Procédé et dispositif d'émission d'un signal montant dans un système de communication sans fil
WO2011090282A2 (fr) Procédé et station de base pour transmission de données de liaison descendante, et procédé et dispositif utilisateur pour réception de données de liaison descendante
WO2010013959A2 (fr) Procédé et dispositif de réception de données dans un système de communications sans fil
WO2017105135A2 (fr) Procédé de transmission ou de réception de signal de référence de liaison montante dans un système de communications sans fil, et appareil associé
WO2010140859A2 (fr) Procédé et appareil pour émettre un signal de référence de sondage
WO2017026857A1 (fr) Procédé et appareil de communication dans un système de communication sans fil
WO2019031942A1 (fr) Procédé de mesure et de rapport d'un signal dans un système de communication sans fil et dispositif s'y rapportant
WO2011105726A2 (fr) Procédé et équipement utilisateur pour mesurer une interférence, et procédé et station de base pour recevoir des informations d'interférence
WO2016163802A1 (fr) Procédé d'exécution de cca dans un système d'accès sans fil supportant une bande sans licence, et appareil le supportant
WO2011111977A2 (fr) Procédé de transmission d'informations de commande de liaison montante et dispositif utilisateur
WO2011145823A2 (fr) Procédé et dispositif de configuration d'un champ d'indication de porteuse dans un système multiporteuses
WO2014133321A1 (fr) Procédé et appareil de transmission d'un canal de commande en fonction de la capacité d'un ue dans un système d'agrégation de supports intra-cellulaire
WO2011055989A2 (fr) Procédé et station de base permettant de réguler la puissance de transmission en liaison descendante, et procédé et équipement d'utilisateur permettant de recevoir un pdsch
WO2014073865A1 (fr) Procédé et appareil de transmission et de réception de données dans un système de communication sans fil
WO2014123378A1 (fr) Procédé servant à l'émission-réception de signal et appareil correspondant
WO2013109109A1 (fr) Procédé d'envoi/réception d'informations de commande et dispositif correspondant
WO2012157987A2 (fr) Procédé permettant de transmettre et de recevoir des informations de commande dans un système de communication sans fil, et appareil correspondant
WO2010077116A2 (fr) Procede efficace de transmission d'informations de commande pendant l'association de porteuses multiples pour soutien de large bande
WO2013006006A2 (fr) Procédé et appareil de transmission d'un signal dans un système de communication sans fil
WO2013162321A2 (fr) Procédé de transmission et de réception de signal, et appareil correspondant
WO2013151395A1 (fr) Procédé de réception de données entrantes et dispositif sans fil utilisant ce procédé
WO2013147532A1 (fr) Procédé de mesure de canal à l'aide d'un signal de référence de suivi dans un système de communication sans fil et dispositif l'utilisant
WO2016060466A1 (fr) Procédé de mesure du brouillage inter-dispositifs dans un système de communications sans fil prenant en charge une émission en fdr, et appareil associé

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10833507

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 13511623

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10833507

Country of ref document: EP

Kind code of ref document: A2